Microsoft Office 2021 Direct Download from Microsoft – All Versions & Languages
This page provides direct download links for Microsoft Office 2021 straight from Microsoft’s official Content Delivery Network (CDN). No third-party sites, no mirrors, no risk. Every link below points to officecdn.microsoft.com — the same server Microsoft uses to distribute Office to paying customers.
You will need a genuine Office 2021 product key to activate after installation. Softkeyworld supplies authentic keys for all Office 2021 editions at up to 79% off the Microsoft Store price, with instant email delivery.
Why Download Directly from Microsoft’s CDN?
- 100% authentic files — the exact same installer Microsoft delivers to retail customers, untouched and unmodified
- No malware risk — third-party Office downloads frequently contain bundled adware, trojans, or modified installers; Microsoft’s CDN eliminates this risk entirely
- Full offline installer — the .img files contain the complete installation package so you can install without an internet connection (internet only needed for activation)
- Latest baseline build — the CDN links always provide the original release version; Windows Update will apply the latest cumulative patches after installation
Microsoft Office 2021 Direct Download Links – All Editions
Office 2021 Professional Plus (Most Popular)
| Language | Direct Download |
|---|---|
| English (US) | Download ProPlus2021Retail.img |
| German (de-DE) | Download |
| French (fr-FR) | Download |
| Spanish (es-ES) | Download |
| Italian (it-IT) | Download |
| Portuguese (pt-PT) | Download |
| Dutch (nl-NL) | Download |
| Polish (pl-PL) | Download |
| Russian (ru-RU) | Download |
| Arabic (ar-SA) | Download |
| Japanese (ja-JP) | Download |
| Chinese Simplified (zh-CN) | Download |
| Turkish (tr-TR) | Download |
Office 2021 Home & Student
| Language | Direct Download |
|---|---|
| English (US) | Download HomeStudent2021Retail.img |
| German | Download |
| French | Download |
| Spanish | Download |
Office 2021 Home & Business
| Language | Direct Download |
|---|---|
| English (US) | Download HomeBusiness2021Retail.img |
| German | Download |
| French | Download |
| Spanish | Download |
How to Use the Downloaded Office 2021 ISO
Step 1: Mount the .img File
Right-click the downloaded .img file and select Mount. Windows 10 and 11 natively support mounting both .img and .iso files. A virtual drive will appear in File Explorer containing the Office installer files.
Step 2: Run Setup.exe
Open the mounted drive and double-click Setup.exe. Accept the UAC prompt and allow the installer to run. Office 2021 will automatically download required components and begin installation — no manual configuration needed.
Step 3: Activate with Your Product Key
Once installed, open any Office application and navigate to File → Account → Activate Product. Enter your Office 2021 product key. Activation typically completes in under 30 seconds.
Tip: The .img file format is identical to .iso and can be opened with the same tools (Windows Mount, 7-Zip, WinRAR, PowerISO). If your tool doesn’t recognise .img, simply rename the file extension to .iso.
Office 2021 Editions Comparison
| Edition | Apps Included | Price (Softkeyworld) |
|---|---|---|
| Professional Plus | Word, Excel, PPT, Outlook, OneNote, Teams, Publisher, Access | From $28.99 |
| Home & Student | Word, Excel, PowerPoint, OneNote | $159.99 |
| Home & Business (Mac) | Word, Excel, PPT, Outlook, OneNote | $100.00 |
| Pro Plus + Remote Tech Support | Full Pro Plus + setup assistance | $59.99 |
🔑 Buy Office 2021 Key – from $28.99
Frequently Asked Questions
Q1: Are these really direct downloads from Microsoft?
Yes — every link on this page points to officecdn.microsoft.com, Microsoft’s official Content Delivery Network. You can verify this by hovering over any link to see the full URL before clicking.
Q2: Do I need a product key to install?
The installer itself is free to download. You need a valid Office 2021 product key to activate after installation. Without activation, Office runs in a limited read-only mode.
Q3: Can I install Office 2021 on multiple PCs?
A standard retail key activates Office 2021 on one PC. If you need multiple licences, see our Office 2021 Pro Plus 5-PC pack or contact us at support@softkeyworld.com for volume options.
Q4: What is the difference between Office 2021 ISO and the Office Deployment Tool?
The ISO files linked above are retail installers containing a full offline copy of Office 2021. The Office Deployment Tool (ODT) is a Microsoft command-line tool used by IT administrators to configure and deploy Office in enterprise environments with custom settings. For most individual users, the ISO download is the simpler choice.
Related Products & Guides
- Office 2021 Pro Plus Key – $49.70
- Office 2024 Pro Plus Key – $69.99
- Office 2019 Pro Plus Key – $91.80
- Office 2021 Installation & Activation Guide
- Office 2019 Download Guide
All download links on this page point directly to Microsoft’s official CDN (officecdn.microsoft.com). Softkeyworld is not affiliated with Microsoft. We supply genuine Microsoft licence keys through authorised retail channels with instant email delivery and a 7-day refund policy. Registered in England and Wales, Company No. 13321373.